Lesson -3 : ETCD

etcd (often written as ETCD) is a critical piece of modern distributed systems—especially in Kubernetes. It’s not a container tool itself, but a reliable data store that keeps the entire system’s state consistent

📦 What is etcd?

etcd is a distributed key–value store designed for:

  • Reliability
  • Consistency
  • Fault tolerance

It stores data in simple key → value pairs, but with strong guarantees that all nodes see the same data.


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